yangshun/front-end-interview-handbook

Front End Interview Handbook is a comprehensive, free study guide for software engineers preparing for front-end developer job interviews. The problem it addresses is that front-end interviews are structurally different from general software engineering interviews: while most CS interview prep focuses on data structures and algorithms, front-end roles test deep knowledge of HTML, CSS, JavaScript, browser behavior, and web-specific system design. Most generic interview resources don't cover these areas well. The handbook covers the full range of topics that come up in front-end interviews. It explains the different interview formats used at various companies, quiz rounds, live coding sessions, take-home assignments, and system design discussions. The trivia section answers hundreds of the classic HTML, CSS, and JavaScript questions that commonly appear as screening questions, organized by topic. There are detailed explanations of front-end system design, how to think about building components like autocomplete widgets, photo feeds, or chat interfaces at scale. Company-specific sections collect questions that have been asked at well-known tech employers. The content is written in MDX (a format that combines Markdown with interactive components) and is published as a readable website at frontendinterviewhandbook.com. It is available in multiple languages including English, Chinese, Japanese, Korean, and Portuguese. You would use this repository when you have an upcoming front-end engineering interview and want a structured way to cover the domain: what browsers do with HTML, how CSS specificity and the box model work, the quirks of JavaScript closures and prototypes, how the event loop operates, and how to approach open-ended system design questions for UI components. The handbook is a reading resource, not a coding practice platform. For actual coding exercises with automated test runners, it points toward the companion paid platform GreatFrontEnd. The handbook itself remains fully free and open source under the MIT license.